Affiliation: | 1.The CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS), International Potato Center (CIP), Sub-Saharan Africa Regional Office, ILRI Campus, Old Naivasha Road, P.O. Box 25171, Nairobi, 00603, Kenya ;2.Department of Land Resource Management and Agricultural Technology, College of Agriculture and Veterinary Sciences, University of Nairobi, P.O. Box 29053-00625, Nairobi, Kenya ;3.The CGIAR Research Program on Roots, Tubers and Bananas (RTB), International Potato Center (CIP), Sub-Saharan Africa Regional Office, ILRI Campus, Old Naivasha Road, P.O. Box 25171, Nairobi, 00603, Kenya ;4.Department of Agricultural Science and Technology, School of Agriculture and Enterprise Development, Kenyatta University, P.O. Box 43844-00100, Nairobi, Kenya ;5.University of Applied Science Bingen (TH Bingen), Berlinstrasse 109, 55411, Bingen, Germany ; |